Atty. David B. Rosenbaum

Atty. David B. Rosenbaum

Valued by clients for his ability to analyze and respond to complicated commercial litigation, David has built a strong practice representing Fortune 50 companies in state and federal courts. He focuses on a wide range of complex litigation, including securities and intellectual property litigation, class action claims, as well as other large commercial disputes.

Phoenix Phoenix 42 Years Experience 42 year
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About

Valued by clients for his ability to analyze and respond to complicated commercial litigation, David has built a strong practice representing Fortune 50 companies in state and federal courts. He focuses on a wide range of complex litigation, including securities and intellectual property litigation, class action claims, as well as other large commercial disputes. He has provided regular counsel to large public companies facing lawsuits in Arizona who value his ability to advocate both in oral and written arguments.

David’s practice includes representation of both local and national companies and their officers and directors, naturally adapting his experience across industries, including aerospace, telecommunications, and healthcare. He graduated with honors from Georgetown University Law School and completed mediation training at the Strauss Institute for Dispute Resolution at Pepperdine University School of Law. He is a past President of the Federal Bar Association and Lawyer Representative to the Ninth Circuit Judicial Conference. He currently serves on the Arizona State Bar Board of Governors and the Board of Directors at the Arizona Foundation for Legal Services and Education. He has been recognized in America’s Leading Lawyers for Business by Chambers USA and has been named multiple times as Lawyer of the Year for Phoenix in Best Lawyers® and as a Top 100 Lawyer in Arizona by AZ Business Magazine.

Education

J.D.
Georgetown University
- 1983
B.A.
University of Pennsylvania
- 1979

Awards

Best Lawyers in America — Bet-the-Company Litigation
- 2026
Best Lawyers in America — Commercial Litigation
- 2026
Best Lawyers in America — Litigation - Construction
- 2026
Best Lawyers in America — Litigation - Intellectual Property
- 2026
Best Lawyers in America — Litigation - Mergers and Acquisitions
- 2026
Best Lawyers in America — Litigation - Securities
- 2026
Best Lawyers in America — Special Focus:
- 2026
Best Lawyers in America — Civil Litigation
- 2026
Best Lawyers in America — Class Actions
- 2026
Best Lawyers in America — Commercial Disputes
- 2026
Best Lawyers in America — Complex Litigation
- 2026
Best Lawyers in America — COVID-19
- 2026
Best Lawyers in America — Defendants
- 2026
Best Lawyers in America — Intellectual Property
- 2026
Best Lawyers in America — SEC Enforcement
- 2026
Best Lawyers in America — Stockholders' Suits
- 2026
Best Lawyers in America — Awards:
- 2026
Best Lawyers in America — Thomson Reuters,
- 2026
Best Lawyers in America — Stand-Out Lawyer, 2025
- 2026
Best Lawyers in America — Chambers USA,
- 2026
Best Lawyers in America — America’s Leading Lawyers for Business
- 2026
Best Lawyers in America — , Litigation: General Commercial, 2005-2025
- 2026
Best Lawyers in America — AZ Business Magazine, “
- 2026
Best Lawyers in America — Top 100 Lawyers in Arizona”, 2020, 2021, 2024
- 2026
Best Lawyers in America — Lawdragon’s “100 Lawyers You Need to Know in Securities Litigation”, 2008
- 2026
Best Lawyers in America — Benchmark Litigation Star
- 2026
Best Lawyers in America — , 2024-2025
- 2026
Best Lawyers in America — Benchmark Litigation
- 2026
Best Lawyers in America — , Arizona “Local Litigation Star”, 2010-2022
- 2026
Best Lawyers in America — Southwest Super Lawyers
- 2026
Best Lawyers in America — , “Top 50 Arizona Attorneys”, 2010, 2012, 2014-2024
- 2026
Best Lawyers in America — in Business Litigation, Securities Litigation, 2007-2025
- 2026
Best Lawyers in America — PHOENIX magazine
- 2026
Best Lawyers in America — , Top Lawyers, Commercial Litigation, 2025
- 2026
Best Lawyers in America — BTI Client Service All-Star Team
- 2026
Best Lawyers in America — , 2011
- 2026
Best Lawyers in America — Arizona’s Finest Lawyers
- 2026
Best Lawyers in America — Judge Learned Hand Award for Community Service, Arizona Chapter of American Jewish Committee, 2006
- 2026
Best Lawyers in America — President’s Award, State Bar of Arizona, 2006
- 2026
Best Lawyers in America — Top 50 Pro Bono Attorneys, 2001
- 2026
Lawyer of the Year — Litigation - Intellectual Property (Phoenix)
- 2024
Lawyer of the Year — Litigation - Securities (Phoenix)
- 2024
Lawyer of the Year — Litigation - Securities (Phoenix)
- 2021
Lawyer of the Year — Litigation - Intellectual Property (Phoenix)
- 2020
Lawyer of the Year — Bet-the-Company Litigation (Phoenix)
- 2016
Lawyer of the Year — Litigation - Securities (Phoenix)
- 2014
Lawyer of the Year — Bet-the-Company Litigation (Phoenix)
- 2011

Bar Admissions

Arizona
Admitted: 1984
District of Columbia
Admitted: 1985

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